package com.zx.Ding.service.impl;/**
 * Author:JasonZ
 * Data:2023/2/4
 */

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.zx.Ding.common.CustomException;
import com.zx.Ding.common.ThreadContext;
import com.zx.Ding.entity.*;
import com.zx.Ding.mapper.OrdersMapper;
import com.zx.Ding.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * @program: Ding
 *
 * @description:
 *
 * @author: JasonZ
 *
 * @create: 2023-02-04 15:44
 **/

@Service
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders>implements OrdersService {
    @Autowired
    private OrderDetailService orderDetailService;
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    /**
     * 提交订单
     * @param orders
     */
    @Override
    public void submit(Orders orders) {
        //1.获取当前用户ID
        Long userId = ThreadContext.getCurrentId();
        //根据用户id查询购物车数据
        LambdaQueryWrapper<ShoppingCart> shoppingCartLambdaQueryWrapper = new LambdaQueryWrapper<>();
        shoppingCartLambdaQueryWrapper.eq(ShoppingCart::getUserId,userId);
        //获得购物车数据
        List<ShoppingCart> shop = shoppingCartService.list(shoppingCartLambdaQueryWrapper);
        if (shop==null||shop.size()==0){
            throw new CustomException("购物车为空 不能下单");
        }

        //查询用户数据
        User user = userService.getById(userId);

        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if(addressBook == null){
            throw new CustomException("用户地址信息有误，不能下单");
        }

        long orderId = IdWorker.getId();//订单号

        AtomicInteger amount = new AtomicInteger(0);

        List<OrderDetail> orderDetails = shop.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());


        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress(addressBook.getDetail());
        //向订单表插入数据，一条数据 根据时间降序排
        LambdaQueryWrapper<Orders> queryWrapper = new LambdaQueryWrapper<>();
        this.save(orders);

        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);

        //清空购物车数据
        shoppingCartService.remove(shoppingCartLambdaQueryWrapper);

    }
}